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Power Conversion Lab
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A power electronics lab that studies how to control electrical energy freely.
AboutAbout the lab
Turning electricity into the form you need
The lab researches power conversion using power semiconductor switching devices, and power electronics, the applied technology built on it.
Power electronics is a technology that controls electrical energy freely, and it is widely used from home appliances to industrial equipment.
The share of electricity in the energy people use grows year by year, so this technology also plays a major role in solving energy and global environmental problems.
The lab works on concrete research themes while considering what power electronics should be like in the future.
Key terms
- Power electronics
- A technical field that changes the voltage, current, and frequency of electricity with semiconductor switches to handle power as desired
- Inverter
- A device that converts direct current into alternating current. It is used, for example, to change the rotation speed of a motor
- Energy harvesting
- The idea of collecting small amounts of vibration or heat from the surroundings and converting them into electricity to power devices
NewsLab news
View More ↗ResearchResearch themes
The lab researches power electronics: converting and controlling power with power semiconductor switching devices, and applying that technology. With energy and global environmental problems in view, it sets its themes by considering what power electronics should be like in the future.
*Illustrative imageNext-generation power converters
To spread the benefits of power electronics further, converters need to be dramatically smaller, free of the harmful effects of switching noise, and easier to use in systems that work together and coordinate. The lab works on multilevel inverters with reduced electromagnetic noise and harmonics, bidirectional power-flow converters for next-generation DC power supply systems, isolated bidirectional AC/DC converters using matrix converters, and the integrated design of entire applications including the converters.
*Illustrative imageHigh-efficiency, high-performance control systems
In the control of robots and mechatronics, a motor is generally treated as a simple element that produces torque proportional to the command current. To achieve high-efficiency, high-performance control, this lab designs the entire control system, including the characteristics of the motor drive and the power converter. The lab also studies energy harvesting, which uses piezoelectric elements to turn everyday vibrations into electricity.
MembersFaculty
The members of the Power Conversion Lab consist of faculty, technical specialists, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorYukihiko Sato
- Associate ProfessorKenji Natori
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Nelson Bipole Thyristors” Wtshymanski at English Wikipedia / Public domain (cropped)
- Next-generation power converters: “Dornbirn-Inverter KACO Powador 25000xi-M-circuit board-09ASD” Asurnipal / CC BY-SA 4.0 (cropped)
- High-efficiency, high-performance control systems: “Servo motor drive” Tero Kontkanen / CC BY-SA 3.0 (cropped)
- Related lab (電子デバイス工学教育研究分野): “Marantz CD63SE - VAM1202 bottom 01” Retired electrician / CC0 (cropped)
- Related lab (電気エネルギー応用教育研究分野): “Superconductor” Edosz2010 / CC BY 4.0 (cropped)
- Related lab (システム制御教育研究分野): “HQ-90 aircraft arrived and assembled at NASA’s Armstrong Flight Research Center (AFRC )” NASA Armstrong Flight Research Center / NASA/Ken Ulbrich / Public domain (cropped)
- Related lab (石井・深川研究室): “AMOLED display microphoto 002 front ( )” Jan Helebrant / CC BY-SA 2.0 (cropped)
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